Broadband Airborne Blade Antenna

30 to 512 MHz & 960 to 2500 MHz

SKU: 21-50-56F03

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Broadband Airborne Blade Antenna

The 21-50-56 is a vertically polarized, omni-directional antenna, compatible with all popular airborne radios operating within the 30 to 512 MHz frequency range plus Link16, Tacan, IFF, JTIDS and other L-band systems.

This wideband, multi-function antenna developed by Cooper Antennas Ltd is particularly suited to tactical military communications. Rugged design ensures reliability in world wide conditions of service on aircraft operating at speeds up to Mach 1.0.

The element is DC grounded for high voltage transfer protection. 

  • Frequency Selective Matching Network  Passive design-requires no external tuning
  • Fully Foamed to Provide High Environmental Integrity
  • Aluminum Alloy Retaining Collar Accepts High Side Loading
  • Drop-on Replacement for AT-1108 & AS3191
  • Suitable for AN/ARC-210, AN/ARC-231 and Similar Multi-Mode Radios
  • Complies with MIL-STD-810/DO160D
  • Lightning Protection in accordance with MIL-DTL-2565 
21-50-56F03
Model # 21-50-56
Brand Cooper Antennas
Frequency

30 - 88 MHz,

108 - 174 MHz,

225 - 512 MHz

960 - 2500 MHz 

Gain

30 MHz ≥ -23.0 dBi

60 MHz ≥ -18.0 dBi

88 MHz ≥ -10.0 dBi

118 MHz ≥ -7.0 dBi

156 MHz ≥ -2.0 dBi 1

74 MHz ≥ -1.0 dBi

225-512 MHz ≥ 0 dBi average

960-2500 MHz 0dBi average

VSWR

≤ 2.5:1 30 - 88 MHz

≤ 3.0:1 108 - 117 MHz

≤ 2.5:1 118 - 174 MHz & 225 - 400 MHz

≤ 2.75:1 401 - 512 MHz

≤ 2.0:1 960 - 1220 MHz

≤ 2.5:1 1221 - 2500 MHz 

Impedance (nominal) 50 Ohms
Power

VHF - 50 Watts CW,

L-band - 200 Watts CW

UHF - 100 watts CW

Polarization Essentially vertical (when mounted vertically) 
Antenna RF Connector V/UHF - TNC Female
Antenna Shell Type High density foam filled epoxy/fiber glass shell set in aluminum alloy base collar
Height 14.75 inches (375mm) 
Weight 3.75 lbs (1.7kg) 
Side Loading  ≥ 8 psi ultimate 
Base Plate Shape Tear drop 
Fixing Holes 6 x Ø 0.200 inches (5mm) holes, counter bore Ø 0.39 inches (9.9mm) 

Finish

  • FED-STD 595 17925 Gloss White
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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